Home / 840,258,588.12-1,158,478,995.52-688,993,926.66

Finding the Fourth Proportional to 840,258,588.12, 1,158,478,995.52 and 688,993,926.66

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Solution

The fourth proportional to 840,258,588.12, 1,158,478,995.52 and 688,993,926.66 is: 949,927,800.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,258,588.12 : 1,158,478,995.52 = 688,993,926.66 : x
  2. Step 2: Convert to fraction form
    840,258,588.12/1,158,478,995.52 = 688,993,926.66/x
  3. Step 3: Cross multiply
    840,258,588.12x = 1,158,478,995.52 × 688,993,926.66
  4. Step 4: Simplify right side
    840,258,588.12x = 798,184,992,077,353,088
  5. Step 5: Solve for x
    x = 798,184,992,077,353,088/840,258,588.12
  6. Step 6: Final answer
    x = 949,927,800.04

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.